Specification :

Sodium tripolyphosphate ( STPP) ;

Other Names: Sodium triphosphate, tripoly pentasodium triphosphate STPP ( Sodium Tripolyphosphate)

We produce STPP ( Sodium Tripolyphosphate) with three grades of Phase I and density as belows:
Phase I: A: 5-20% ; B: 21-40% ; C: > 40%

Bulk Density: Light: 0.35-0.5g/ cm3; Medium: 0.51-0.65g/ cm3; Dense: 0.66-1.0g/ cm3.

Synonymous Names: Sodium triphosphate, tripoly pentasodium triphosphate
Appearance: White powder or granules.
Formula: Na5P3O10
Boiling Point: 1000 C
Melting Point: 622 C
Specific Gravity: > 1.5 ( water = 1)
pH: 9.2 - 10.0 ( 1% solution)
Solubility in water: 150 g/ l ( 25 deg C)

Packing: Plastic-lined woven bag, N. W. 25kg
Annual output: 10, 000 MT
Properties and uses: White powder, mainly used as synthetic detergent, water-softening agent, dispersant of drilling mud and mineral floating, catalyst of organic synthesis.
No. Index Technical Grade
01 Assay Na5P3O10 % e 94.0
02 P2 O 5 % e 57.0
03 Water Insoluble Matter % d 0.15
04 Iron( Fe) % d 0.015
05 PH value ( 1% water solution) 9.2-10.0
06 Whiteness % e 90
07 density ( g/ cm 3 ) 0.70-0.90
08 Phase I 10-30
09 Particle Size( 1.00mm) % e 95
10 Appearance White powder